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Latest Plate tectonics Stories

Global Distribution Of Sulfur Particles Following Large Eruptions Modeled By GEOMAR Researchers
2013-07-08 10:29:07

GEOMAR Helmholtz Centre for Ocean Research Kiel How severely have volcanoes contaminated the atmosphere with sulfur particles in past millennia? To answer this question, scientists use ice cores, among others, as climate archives. But the results differ, particularly in some major volcanic major events of the past, depending on whether the cores come from Antarctica or Greenland. Atmospheric scientists from the GEOMAR Helmholtz Centre for Ocean Research Kiel and the Max Planck Institute...

Upwellings In Earth's Mantle Have Remained Stable Over Geologic Time
2013-06-27 08:33:06

April Flowers for redOrbit.com - Your Universe Online A new study from the University of Hawaii - Manoa's School of Ocean and Earth Science and Technology (SOEST) reveals that the large-scale upwelling within Earth's mantle mostly occur in only two locations: beneath Africa and the Central Pacific. Clinton Conrad, associate professor of geology at SOEST, led the team of researchers who found, despite dramatic reconfigurations of tectonic plate motions and continental locations on the...

Two Alaskan Volcanoes Release More Energy, Stronger Eruptions Ongoing
2013-06-26 09:20:55

Lawrence LeBlond for redOrbit.com - Your Universe Online Two of three active Alaskan volcanoes have shown a sizeable increase in activity since first erupting weeks ago, according to the Alaska Volcano Observatory (AVO). AVO warned the Pavlof and Veniaminof volcanoes could become even more active in the future. For now, both volcanoes have been spewing lava and ash into the atmosphere, with at least one of the two peaks disrupting local air traffic. Pavlof, an 8,000-foot,...

2013-06-18 15:37:09

Is this where the expected Marmara earthquake will originate from? Earthquake researchers have now identified a 30 kilometers long and ten kilometers deep area along the North Anatolian fault zone just south of Istanbul that could be the starting point for a strong earthquake. The group of seismologists including Professor Marco Bohnhoff of the GFZ German Research Centre for Geosciences reported in the current online issue of the scientific journal Nature (Nature Communications, DOI:...

Embryonic Subduction Zone Could One Day Unite Continents
2013-06-18 05:03:08

redOrbit Staff & Wire Reports - Your Universe Online The activation of a passive plate boundary in the Atlantic Ocean could ultimately result in continental Europe moving closer to the US, according to new research appearing in the journal Geology. In the study, geologists at Monash University in Melbourne, Australia report they have uncovered the first direct evidence that a subduction zone forming off the coast of Portugal will begin a cycle which results in the closing of the...

2013-06-17 09:52:57

The noble gases get their collective moniker from their tendency toward snobbishness. The six elements in the family, which includes helium and neon, don't normally bond with other elements and they don't dissolve into minerals the way other gases do. But now, geochemists from Brown University have found a mineral structure with which the nobles deign to fraternize. Researchers led by Colin Jackson, a graduate student in geological sciences, have found noble gases to be highly soluble in...

2013-06-13 10:52:22

Reassessment of the role of water in plate tectonics Water in the Earth's crust and upper mantle may not play such an important role as a lubricant of plate tectonics as previously assumed. This is a result geoscientists present in the current issue of the scientific journal Nature (13/06/2013) after the examination of water in the mineral olivine. Laboratory experiments over the past three decades have suggested the presence of water greatly weakens the mechanical strength of the...

Megathrust Earthquakes
2013-06-13 05:25:12

redOrbit Staff & Wire Reports - Your Universe Online In an attempt to better prepare for future massive “megathrust” earthquakes along the west coast of Canada, researchers have prepared a record of earthquake history in southern British Columbia. Their findings, which were published Wednesday in the Canadian Journal of Earth Sciences, will play an important role in helping scientists, government officials and the general public understand the size and frequency of...

'Caldas Tear' Resolves Seismic Activity Beneath Colombia
2013-06-06 20:49:15

Seismological Society of America Colombia sits atop a complex geological area where three tectonic plates are interacting, producing seismicity patterns that have puzzled seismologists for years. Now seismologists have identified the "Caldas tear," which is a break in a slab that separates two subducting plates and accounts for curious features, including a "nest" of seismic activity beneath east-central Colombia and high grade mineral deposits on the surface. In a paper published in...

Volcano Monitoring Program Searches Iceland For Early Signs Of Eruptions
2013-05-23 13:49:01

Lee Rannals for redOrbit.com — Your Universe Online A new collaborative project called FutureVolc is aimed at trying to improve monitoring of Iceland's volcanoes. FutureVolc started October 1, 2012 and is funded by the Environmental/FP7 program of the European Commission. The project says its main objectives are to establish an integrated volcano monitoring system through European collaboration, develop new methods to evaluate volcanic crises, increase scientific understanding of...


Latest Plate tectonics Reference Libraries

Hualālai
2014-04-10 12:06:55

Hualālai is a dormant shield volcano that is located on the island of Hawaii and is one of five volcanoes that form the island. It reaches an elevation of 8,271 feet and is thought to have emerged from the sea about 300,000 years ago, making it the third youngest volcano on the island. Its shape is rough compared to younger volcanoes and it holds three rift zones that are covered with over one hundred cinder cones and spatter cones. Although it does not hold a caldera at its summit, it does...

Zubair Group
2014-04-10 10:08:46

Zubair Group, also known as Zubayr Group or Al Zubair Group, is a chain of volcanic islands belonging to Yemen that are located on top of a shield volcano in the Red Sea. Zubair Group The largest island, known as Zubair, is among the youngest islands, which also include Saba, Saddle, and Haycock. The shield volcano underneath the islands began a period of eruptions and eventually quieted down, followed by a period of explosive and effusive eruptions that formed the islands that are present...

Kohala
2014-04-10 10:03:58

Kohala is an extinct shield volcano that is located on the island of Hawaii and reaches an elevation of 5,480 feet. It is one of five volcanoes that comprise the island of Hawaii and is thought to be about one million years old, although it only emerged from the sea about 500,000 years ago. Because its last eruption is thought to have occurred about 120,000 years ago, based on studies conducted on hardened lava flows, this volcano is not thought to pose a threat to inhabitants on the island....

Santa María Volcano
2014-04-09 10:58:40

Santa María Volcano is an active stratovolcano that is located in Guatemala and is part of the Sierra Madre, a string of volcanoes that stretches across the western side of Guatemala. The volcanoes in this string were formed by subduction activity, when the Cocos Plate moved under the Caribbean Plate. An eruption in 1902 produced a crater that now holds a lava dome known as Santiaguito, which was created during another eruption in 1922. These domes hold active vents and in 1929, part of the...

Pacaya
2014-04-09 10:53:58

Pacaya is an active complex volcano that is located in Guatemala and is part of the Central American Volcanic Arc. It reaches and elevation of 8,373 feet and is located on a volcanic caldera, along with Lago de Amatitlán, that has been the cause of at least nine large explosive eruptions in the past 300,000 years. Its edifice collapsed about 1,100 years ago, producing a landslide that traveled sixteen miles and left a crater where the current cone is still forming. The active magma chamber...

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Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.